EP1839722B1 - Dispositif de separation pour extraire des particules - Google Patents

Dispositif de separation pour extraire des particules Download PDF

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Publication number
EP1839722B1
EP1839722B1 EP06006325A EP06006325A EP1839722B1 EP 1839722 B1 EP1839722 B1 EP 1839722B1 EP 06006325 A EP06006325 A EP 06006325A EP 06006325 A EP06006325 A EP 06006325A EP 1839722 B1 EP1839722 B1 EP 1839722B1
Authority
EP
European Patent Office
Prior art keywords
region
gas flow
branch
flow passage
deflecting region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06006325A
Other languages
German (de)
English (en)
Other versions
EP1839722A1 (fr
Inventor
Ulrich Kathol
Dieter Nass
Lars Schlüter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE502006007581T priority Critical patent/DE502006007581D1/de
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT06006325T priority patent/ATE476242T1/de
Priority to EP06006325A priority patent/EP1839722B1/fr
Priority to ES06006325T priority patent/ES2349418T3/es
Priority to US12/225,622 priority patent/US8177873B2/en
Priority to JP2009501983A priority patent/JP5506380B2/ja
Priority to PCT/EP2007/051584 priority patent/WO2007110284A1/fr
Priority to CN2007800108902A priority patent/CN101410163B/zh
Publication of EP1839722A1 publication Critical patent/EP1839722A1/fr
Application granted granted Critical
Publication of EP1839722B1 publication Critical patent/EP1839722B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes

Definitions

  • the invention relates to a separation device for separating particles, in particular liquid droplets, from a gas flow containing the particles with a gas flow leading flow channel having at least one deflection for deflecting the gas flow, and a receptacle for receiving the particles, wherein the flow channel further comprises a to the receiving container leading branch for separating the particles from the gas flow.
  • Such separation devices may be used to deposit solid particles such as dust or sand, and more particularly to deposit particles in the form of liquid droplets.
  • Separating devices for separating liquid droplets are used, for example, in refineries of the petrochemical industry and in particular in air separation plants for industrial gases. In such systems, centrifugal compressor shafts having compressor stages are arranged one after the other. Separating devices of the aforementioned type can be switched between these compressor stages. Thus, a cooler of the upstream compressor stage leaving compressed moist gas, such as compressed moist air, are introduced into the separator. When the dew point falls below the water component, a certain amount of water and droplet size in the incoming gas flow is to be expected. The gas flow follows the deflection region of the flow channel. Due to their inertia, the liquid droplets can not completely follow the deflection region and thus drift in the direction of the radially outer wall region of the flow channel. The liquid droplets should then pass through the branch into the receptacle.
  • German patent DE 38 59 45 already known is a separation of solid or liquid components from gases or vapors, in which prior to entry into a compressor, the laden with the foreign bodies gas is deflected and at the end of the deflection on the outer radius of a separation opening is provided, in which the components of the flow with higher density. Since, in addition to these components to be separated, components of the gas to be compressed also pass through the separation opening, the adjoining conduit is provided with a recirculation channel, so that the portions of the gas freed from the foreign bodies can re-enter the fluid flow upstream.
  • a disadvantage of the known arrangement is the lack of provision against stagnant phenomena in the conduit for the removal of foreign substances.
  • a mist eliminator with two deflection areas, collecting container and connection between the flow channel and the collecting container is from FR 2857058 known.
  • An object of the invention is to improve a separation device of the type mentioned in that a better separation of the particles of the gas flow can be achieved without much additional cost.
  • the flow channel has a second deflection region arranged downstream with respect to the first deflection region, by means of which a change in direction of the gas flow is effected, which is opposite to a change in direction of the gas flow caused by the first deflection region and in which the flow channel has a third deflection region arranged upstream with respect to the first deflection region, by means of which a change in direction of the gas flow is effected, which is opposite to a change in direction of the gas flow caused by the first deflection region.
  • an automatic pressure equalization between the receptacle and the flow channel is achieved.
  • a "ventilation flow” can form.
  • the solution according to the invention thus makes it possible to avoid a gas flow in the flow channel in the region of the branch in a cost-efficient manner. Due to the fact that the line connects the receptacle to the flow channel in a fluid-conducting manner, the suction flow in the receptacle results, in particular, from the gas flow present in the flow channel. That is, the gas flowing with the particles into the receptacle is sucked in from the conduit due to this suction, thus avoiding gas congestion in the flow channel in the region of the branch, thus improving the deposition of the particles into the receptacle.
  • the line opens into both the receptacle and in the flow channel.
  • the suction effect described above can thus develop even better.
  • the inventive fluid-conducting connection of the receptacle with the flow channel by means of the conduit moreover, the necessity of using a bulky and expensive suction device is avoided.
  • the line connects the receptacle fluid-conducting with a respect to the branch downstream region of the flow channel. That is, the line establishes a fluid-conducting connection with a region of the flow channel which the gas flow does not pass until after the flow past the branch.
  • the line can be made very compact. Thus, a particularly good suction in the receptacle can be generated.
  • the container has a first wall portion and a second wall region opposite thereto, wherein the branch opens at the first wall portion and the line at the second wall portion in the receptacle.
  • the "ventilation flow" formed by the line has the same direction as the gas flow entering via the branch into the receptacle, whereby a backflow of the gas flow in the region of the branch can be avoided particularly effectively.
  • the branch is arranged in the deflection region, in particular on the inside on a radially outer wall region of the deflection region.
  • the particles can be separated from the gas flow in a particularly effective manner since they approach the radially outer wall region of the deflection region due to the change in direction of the flow channel in the deflection region.
  • the flow channel furthermore has a second deflection region arranged downstream with respect to the deflection region, by means of which a change in direction of the gas flow is effected, which is opposite to a change in direction of the gas flow caused by the first deflection region.
  • the flow channel can be given a course that covers the receptacle in a sense from two sides. This makes it possible to carry out the line between the receptacle and the flow channel particularly compact, whereby a particularly effective pressure equalization in the receptacle is made possible.
  • the second deflection region is followed by a fourth deflection region, by means of which a further change in direction of the gas flow is effected, which in turn is opposite to the change in direction of the gas flow caused by the second deflection region.
  • the first deflection region of the flow channel substantially describes a U-shape, and in particular causes a deflection of the gas flow by about 180 °.
  • the particles to be separated are urged in large numbers on the radially outer wall region of the first deflection region and can thus be deposited by means of the branch particularly effective in the receptacle.
  • the branch is arranged at a point of the deflection region at which the direction of the flow channel is pivoted by at least 90 ° relative to the direction of the flow channel at an inflow-side beginning of the deflection region. That is, the branch is arranged at a point of the deflection, where the deflection has already completed a curve of at least 90 °. At this point, the particles are already in large numbers on the radially outer Wall region of the flow channel arranged and can thus be effectively diverted into the receptacle.
  • the flow channel further comprises a third deflection region arranged upstream with respect to the first deflection region, by means of which a change in direction of the gas flow is effected, which is opposite to a change in direction of the gas flow caused by the first deflection region.
  • the flow channel initially has a third deflection region curved in a specific direction, to which the first deflection region containing the branch connects with an opposite direction of curvature. Due to the curvature of the third deflection region, the particles thus approach the radially outer wall region of the third deflection region. The particles can not follow the new deflection by the subsequent first deflection region accordingly and are thus effectively taken up by the receptacle with a corresponding arrangement of the branch at the first deflection.
  • the flow channel in a region downstream of the branch, has substantially uniform cross-sectional areas at a plurality of points, in particular at all points of the region, along the flow channel.
  • the gas flow is continued after passing prevailing at the branch in the flow channel with a substantially constant cross-sectional area. This largely avoids flow losses in the gas flow.
  • FIG. 1 illustrated embodiment of the separation device 10 comprises a flow channel 12 which extends between an inlet 14 and an outlet 16.
  • the inlet 14 may be connected to a cooler of a compressor stage, not shown graphically, for example, an air separation plant and receives in operation the radiator leaving compressed moist gas in the form of compressed moist air.
  • a further compressor stage of an air separation plant can be arranged.
  • the compressed moist air contains a plurality of liquid droplets of different diameters.
  • the flow channel 12 initially has a subsequent to the inlet 14, curved to the right third deflection region 18, which causes a change in direction of the flow channel 12 by about 60 ° on. This is followed by a first deflecting region 20 which essentially describes a U-shape and curves to the left.
  • a branch 26 is provided, which opens into a first wall region 28a of a receptacle 28 or a so-called water chamber.
  • the branch 26 is formed as a continuously narrowing in cross-section line and disposed at a position of the first deflection region 20 at which the direction of the flow channel 12 with respect to the direction of the flow channel 12 at the upstream side 20a of the first deflection region 20 is pivoted by more than 90 ° is.
  • the flow channel 12 then has a to the left-curved first deflection region 20 a Direction change of the flow channel 12 by an angle of about 135 ° causing right-curved second deflection region 22. This is followed in turn by a change in the direction of the flow channel 12 at an angle of approximately 90 ° which effects the left-curved fourth deflection region 24.
  • the receptacle 28 is fluidly connected via a line 30 with respect to the branch 26 downstream region 29 of the flow channel 12.
  • the line 30 leads into a second wall region 28b opposite the first wall region 28a of the receptacle 28 and on the other hand into a transition region between the second deflecting region 22 and the fourth deflecting region 24 into the flow channel 12.
  • the line 30 is used for automatic pressure equalization of the receiving container 28.
  • Fig. 2 shows a distribution of liquid droplets 32 in the form of water droplets in the gas or air flow passing through the separator 10. How out Fig. 2 can be removed, the liquid droplets 32 are first brought by the right-curved third deflection region 18 to a radially outer wall portion 19 of the third deflection region 18. By the adjoining left-curved first deflection region 20, the liquid droplets 32 are then guided to the radially outer wall region 21 of the first deflection region 20 of the flow channel 12. The liquid droplets 32 are then deposited in large numbers via the branch 26 into the receptacle 28. The deposited liquid droplets 32 are mainly heavy liquid droplets 32a having a large diameter. Light liquid droplets 32b with a smaller diameter are entrained with the air flow in the second deflection region 22 of the flow channel 12.
  • a recirculation region 34 forms, so that the liquid droplets 32 enter the receiving container 28 in a narrow flow path 36 above the recirculation region 34 at an acute angle.
  • the liquid droplets 32 settle in its lower region.
  • the light liquid droplets 32b entrained by the air flow are forced past the junction 26 by the successive arrangement of the second deflection region 22 and the fourth deflection region 24 to the radially inner wall region 25 of the fourth deflection region 24.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Cyclones (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (8)

  1. Dispositif ( 10 ) de séparation pour séparer des particules ( 32 ), notamment des gouttelettes de liquide, d'un courant gazeux contenant les gouttelettes ( 32 ), comprenant un canal ( 12 ) d'écoulement guidant le courant gazeux et ayant au moins une partie ( 20 ) de déviation pour dévier le courant gazeux, et un récipient ( 28 ) de réception pour recevoir les particules ( 32 ), le canal ( 12 ) d'écoulement ayant en outre une bifurcation ( 26 ) menant au récipient ( 28 ) de réception pour la séparation des particules ( 32 ) du courant gazeux, bifurcation qui est prévue sur une partie ( 21 ) de paroi se trouvant à l'extérieur radialement de la partie ( 20 ) de déviation,
    dans lequel, en plus de la bifurcation ( 26 ), un conduit ( 30 ) mène au récipient ( 28 ) de réception et fait communiquer le récipient ( 28 ) de réception fluidiquement avec le canal ( 12 ) d'écoulement, de manière à ce que le courant gazeux présent dans le canal d'écoulement donne un effet d'aspiration dans le récipient de réception,
    caractérisé en ce que
    le canal ( 12 ) d'écoulement a une deuxième partie ( 22 ) de déviation, qui est disposée en aval de la première partie ( 20 ) de déviation et au moyen de laquelle il est provoqué une modification de la direction du courant gazeux qui est opposée à la modification de direction du courant gazeux provoquée par la première partie ( 20 ) de déviation et en ce que le canal ( 12 ) d'écoulement a une troisième partie ( 18 ) de déviation, qui est disposée en amont de la première partie ( 20 ) de déviation et au moyen de laquelle il est provoqué une modification de la direction du courant gazeux qui est opposée à une modification de direction du courant gazeux, provoquée par la première partie de déviation.
  2. Dispositif de séparation suivant la revendication 1, caractérisé en ce que
    le conduit ( 30 ) met en communication le récipient ( 28 ) de réception fluidiquement avec une partie ( 29 ) du canal ( 12 ) d'écoulement en aval de la bifurcation ( 26 ).
  3. Dispositif de séparation suivant la revendication 1 ou 2, caractérisé en ce que
    le récipient ( 28 ) de réception a une première partie ( 28 ) de paroi, ainsi qu'une deuxième partie ( 28b ) de paroi opposée à celle-ci, la bifurcation ( 26 ) débouchant dans le récipient ( 28 ) de réception sur la première ( 28a ) de paroi et le conduit ( 30 ) sur la deuxième partie ( 28b ) de paroi.
  4. Dispositif de séparation suivant l'une des revendications précédentes,
    caractérisé en ce que
    la bifurcation ( 26 ) est disposée dans la partie ( 20 ) de déviation, notamment du côté intérieur sur une partie ( 21 ) de paroi de la partie ( 20 ) de déviation se trouvant à l'extérieur radialement.
  5. Dispositif de séparation suivant l'une des revendications précédentes,
    caractérisé en ce que
    la partie ( 20 ) de déviation du canal ( 12 ) d'écoulement décrit sensiblement une forme en U et provoque notamment une déviation du courant gazeux d'environ 180°.
  6. Dispositif de séparation suivant l'une des revendications précédentes,
    caractérisé en ce que
    la bifurcation ( 26 ) est disposée en un point de la partie ( 20 ) de déviation, où la direction du canal ( 12 ) d'écoulement est basculée d'au moins 90° par rapport à la direction du canal ( 12 ) d'écoulement en un début ( 20a ) du côté de l'admission de la partie ( 20 ) de déviation.
  7. Dispositif de séparation suivant l'une des revendications précédentes,
    caractérisé en ce que
    le canal ( 12 ) d'écoulement a une troisième partie ( 18 ) de déviation, qui est disposée en amont de la première partie ( 20 ) de déviation et au moyen de laquelle il est provoqué une modification de la direction du courant gazeux, qui est opposée à la modification de la direction du courant gazeux provoquée par la première partie de déviation.
  8. Dispositif de séparation suivant l'une des revendications précédentes,
    caractérisé en ce que
    le canal ( 12 ) d'écoulement a, dans une partie ( 29 ) en aval de la bifurcation ( 28 ), en plusieurs points, notamment en tous les points de la partie ( 29 ), des surfaces de section transversale sensiblement de même dimension le long du canal ( 12 ) d'écoulement.
EP06006325A 2006-03-27 2006-03-27 Dispositif de separation pour extraire des particules Not-in-force EP1839722B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AT06006325T ATE476242T1 (de) 2006-03-27 2006-03-27 Abscheidevorrichtung zum abscheiden von teilchen
EP06006325A EP1839722B1 (fr) 2006-03-27 2006-03-27 Dispositif de separation pour extraire des particules
ES06006325T ES2349418T3 (es) 2006-03-27 2006-03-27 Dispositivo separador para la separación de partículas.
DE502006007581T DE502006007581D1 (de) 2006-03-27 2006-03-27 Abscheidevorrichtung zum Abscheiden von Teilchen
US12/225,622 US8177873B2 (en) 2006-03-27 2007-02-20 Separating device for separating out particles
JP2009501983A JP5506380B2 (ja) 2006-03-27 2007-02-20 粒子を分離するための分離装置
PCT/EP2007/051584 WO2007110284A1 (fr) 2006-03-27 2007-02-20 Dispositif de separation pour la separation de particules
CN2007800108902A CN101410163B (zh) 2006-03-27 2007-02-20 用于分离微粒的分离装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06006325A EP1839722B1 (fr) 2006-03-27 2006-03-27 Dispositif de separation pour extraire des particules

Publications (2)

Publication Number Publication Date
EP1839722A1 EP1839722A1 (fr) 2007-10-03
EP1839722B1 true EP1839722B1 (fr) 2010-08-04

Family

ID=36648946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06006325A Not-in-force EP1839722B1 (fr) 2006-03-27 2006-03-27 Dispositif de separation pour extraire des particules

Country Status (8)

Country Link
US (1) US8177873B2 (fr)
EP (1) EP1839722B1 (fr)
JP (1) JP5506380B2 (fr)
CN (1) CN101410163B (fr)
AT (1) ATE476242T1 (fr)
DE (1) DE502006007581D1 (fr)
ES (1) ES2349418T3 (fr)
WO (1) WO2007110284A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2092972A1 (fr) 2008-02-25 2009-08-26 Siemens Aktiengesellschaft Unité de compresseur
US9108136B2 (en) 2013-02-13 2015-08-18 Camfil Usa, Inc. Dust collector with spark arrester
CN105664593B (zh) * 2016-03-10 2017-12-19 华西能源工业股份有限公司 管材内壁吹灰收灰装置及其收灰箱
DE102017221309A1 (de) 2017-11-28 2019-05-29 Robert Bosch Gmbh Gas-Flüssigkeitsabscheider zum Abscheiden von zumindest einem flüssigen Bestandteil von einem gasförmigen Bestandteil
CN112945823A (zh) * 2021-02-22 2021-06-11 浙江浙能嘉华发电有限公司 一种用于流场中的颗粒富集装置及富集方法

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US3989489A (en) * 1975-08-04 1976-11-02 Shell Oil Company Centrifugal apparatus for gas/liquid separation
WO1993011852A1 (fr) * 1991-12-11 1993-06-24 Environmental Protection Group Ltd. Dispositif permettant de separer des fluides a plusieurs composants
FR2857058A1 (fr) * 2003-07-03 2005-01-07 Coutier Moulage Gen Ind Dispositif de decantation d'eau pour ligne d'admission d'air d'un moteur a combustion interne

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JPS56144720A (en) 1980-04-14 1981-11-11 Hitachi Ltd Removing apparatus for dust flowing through pipe line
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Publication number Priority date Publication date Assignee Title
US3989489A (en) * 1975-08-04 1976-11-02 Shell Oil Company Centrifugal apparatus for gas/liquid separation
WO1993011852A1 (fr) * 1991-12-11 1993-06-24 Environmental Protection Group Ltd. Dispositif permettant de separer des fluides a plusieurs composants
FR2857058A1 (fr) * 2003-07-03 2005-01-07 Coutier Moulage Gen Ind Dispositif de decantation d'eau pour ligne d'admission d'air d'un moteur a combustion interne

Also Published As

Publication number Publication date
DE502006007581D1 (de) 2010-09-16
US8177873B2 (en) 2012-05-15
CN101410163A (zh) 2009-04-15
US20110005179A1 (en) 2011-01-13
WO2007110284A1 (fr) 2007-10-04
EP1839722A1 (fr) 2007-10-03
ES2349418T3 (es) 2011-01-03
ATE476242T1 (de) 2010-08-15
JP2009531171A (ja) 2009-09-03
JP5506380B2 (ja) 2014-05-28
CN101410163B (zh) 2011-10-05

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